WO2015155525A1 - Composition de zéolite particulaire - Google Patents

Composition de zéolite particulaire Download PDF

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Publication number
WO2015155525A1
WO2015155525A1 PCT/GB2015/051070 GB2015051070W WO2015155525A1 WO 2015155525 A1 WO2015155525 A1 WO 2015155525A1 GB 2015051070 W GB2015051070 W GB 2015051070W WO 2015155525 A1 WO2015155525 A1 WO 2015155525A1
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Prior art keywords
zeolite
composition
particles
zeolite composition
formulation
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PCT/GB2015/051070
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English (en)
Inventor
Suwitanan BOONSRI
Wichet KHAMSIANG
Prateep UDOMPUESH
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Pq Silicas Uk Limited
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Publication date
Application filed by Pq Silicas Uk Limited filed Critical Pq Silicas Uk Limited
Priority to CN201580018108.6A priority Critical patent/CN106232522A/zh
Priority to TR2016/14069T priority patent/TR201614069T1/tr
Publication of WO2015155525A1 publication Critical patent/WO2015155525A1/fr
Priority to ZA2016/06564A priority patent/ZA201606564B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
    • C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
    • C01B39/023—Preparation of physical mixtures or intergrowth products of zeolites chosen from group C01B39/04 or two or more of groups C01B39/14 - C01B39/48
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
    • C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
    • C01B39/14—Type A
    • C01B39/16—Type A from aqueous solutions of an alkali metal aluminate and an alkali metal silicate excluding any other source of alumina or silica but seeds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/128—Aluminium silicates, e.g. zeolites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/19—Oil-absorption capacity, e.g. DBP values

Definitions

  • the present invention relates to a particulate zeolite composition which is intended particularly, but not necessarily exclusively, for use in producing a particulate or granular detergent or detergent additive formulation comprised of the particulate zeolite composition and a surface active agent absorbed in or on the particles thereof.
  • the zeolite composition is capable of absorbing relatively high amounts of surface active agent (e.g. a liquid non-ionic surface active agent) whilst providing a particulate or granular detergent or detergent additive formulation which is free-flowing.
  • Surfactants e.g. non-ionic surfactants
  • a liquid or pasty nature have been used for many years in the production of water soluble, powdered or granular detergent formulations.
  • the pasty or liquid surfactant (optionally with other components for a detergent formulation) has been absorbed or otherwise incorporated in a particulate or granular material to provide either a final detergent formulation or a detergent additive formulation which may then be mixed with other powdered or granular components to produce a final detergent formulation.
  • powdered or granular detergent or detergent additive formulations were produced by the spray-drying of an aqueous slurry which comprises the surfactant(s) and optionally other components of a detergent formulation.
  • aqueous slurry which comprises the surfactant(s) and optionally other components of a detergent formulation.
  • Such a procedure has the advantage that the particles produced are relatively porous and dissolve relatively easily in the laundry wash solution.
  • the powder produced is of relatively low bulk density and thus of relatively high volume, thus increasing packaging requirements.
  • spray drying has a relatively high energy requirement and there are also environmental disadvantages in relation to fumes emitted from the spray dryer.
  • Another aspect of detergent formulation relates to the development of builders for ensuring adequate detergent formulation for the case where the water fed to the laundry washing machine contains calcium or magnesium ions, which can have an adverse effect on surfactant performance.
  • phosphates were used as builders but have now fallen into environmental disfavour due to their eutrophic effect.
  • Zeolites e.g. zeolite A
  • zeolite A have been used as replacements for phosphates as builders.
  • the zeolites contain labile (usually sodium) ions in the zeolite structure which can be exchanged with calcium or magnesium ions in the wash solution, the builder function being provided by virtue of the fact that the calcium and/or magnesium ions remain bound within the zeolite structure.
  • Zeolites are absorbent and can therefore be used for the production of particulate or granular detergent or detergent additive formulations by the absorption of surface active agents. Thus both the ion exchange capability and absorption capacity of zeolites have been regarded as important features for their use in detergent or detergent additive formulations.
  • Doucil 4A zeolite (a zeolite A) sold by PQ Corporation is stated in promotional literature as having a calcium binding capacity of greater than 155 mg CaO/g zeolite and having a liquid carrying capacity of about 38 g of liquid non-ionic surfactant per 100g of zeolite (the equivalent figures for sodium carbonate (“light”), sodium tripolyphosphate and nitrilotriacetic acid being between 20 and 30 g of liquid non-ionic surfactant per 100 g of the respective absorbent substrate).
  • zeolites are now used in detergent formulations for their liquid absorption capability rather than their builder properties.
  • EP 0 739 977 discloses the use of a powder consisting essentially of zeolite A, B, X or mixtures thereof and crystalline zeolite HS for the manufacture of a granular detergent composition or component having a bulk density greater than 650 g/l by mixing a liquid binder (e.g. a surfactant paste comprised of an anionic, cationic, amphoteric, zwitterion or non-ionic surfactant or a mixture thereof) with the powder.
  • a liquid binder e.g. a surfactant paste comprised of an anionic, cationic, amphoteric, zwitterion or non-ionic surfactant or a mixture thereof.
  • the powder material specifically disclosed in the Example of EP 0 739 977 was Zeolite A/HS supplied by Industrial Zeolites (UK) Ltd.
  • the present invention provides particulate, crystalline zeolite compositions which are of high absorption capacity and which are eminently suitable for use in the production of particulate or granular detergent or detergent additive formulations.
  • the zeolite compositions comprise particles of co-crystallised zeolite A and zeolite HS, preferably with at least 90% by weight of the particles having a size less than 20 ⁇ and/or a mean particle size in the range of 1 to 10 ⁇ .
  • the particulate zeolite composition has a calcium binding capacity of 20 to 120 mg CaO/g anhydrous zeolite.
  • Zeolites in accordance with this aspect of the invention are capable of having an oil absorption value of at least 60 g oil per 100 g of the zeolite composition and are a significant advance over prior art zeolite A/zeolite HS compositions as disclosed in EP 0 739 977 in terms of their ability to absorb surfactants.
  • Zeolite compositions comprising particles of co-crystallised zeolite A and zeolite HS having oil absorption values of at least 60 g oil per 100 g of the zeolite composition are an important feature of the invention in their own right and provide a further (second) aspect thereof.
  • Preferred zeolite compositions in accordance with the invention have a calcium binding capacity of 20 to 120 mg CaO/g anhydrous zeolite and an oil absorption value of at least 60 g oil per 100 g of the zeolite composition.
  • the co- crystallised zeolite A and zeolite HS are preferably in their sodium forms.
  • particulate or granular detergent or detergent additive formulations which comprise crystalline particles of co-crystallised zeolite A and zeolite HS, preferably in their sodium forms, and at least one surfactant absorbed by the particles, wherein the particles free of absorbed material preferably have a calcium binding capacity of 20 to 120 mg CaO/g anhydrous zeolite and/or an oil absorption value of at least 60 g of oil per 100 g of the zeolite particles.
  • the crystalline particles of co-crystallised zeolite A and zeolite HS have a size distribution such that at least 90% by weight have a size less than 20 ⁇ and/or a mean particle size in the range 1 to 10 ⁇ .
  • Preferred zeolite compositions consist essentially of or consist of the particles of co- crystallised zeolite A and zeolite HS.
  • the co-crystallised particles preferably consist essentially of or consist of zeolite A and zeolite HS.
  • composition consisting essentially of a set of components may comprise less than 10% by weight, more typically less than 5% by weight, and even more typically less than 1 % by weight of non-specified components.
  • Oil absorption values referred to herein are as determined in accordance with ISO 787/5 - 1980 and are expressed as grams of oil per 100 g of zeolite particles.
  • Surfactant absorption values are determined using an Absorptometer C (supplied by Brabender GmbH & Co, Germany) and a method based on ASTM D2414 for measurement of the absorption of oil by carbon black.
  • 30 g of the zeolite under investigation is placed in the sample chamber of the Absorptometer C.
  • a liquid surfactant (Synperonic® A3, a non-ionic surfactant supplied by Croda International, see infra for composition details) is added to the sample at a rate of 4 ml/minute while the mixing blades of the Absorptometer C rotate at 125 rpm.
  • the instrument measures the torque in the mixture, which increases as the liquid is added until the powder is saturated. Further addition of liquid at this point reduces the torque.
  • the instrument is programmed to turn off both burette and mixer 10 seconds after maximum torque in the mixer is reached; the amount of surfactant added at this point corresponds to the surfactant absorption value of the sample.
  • CBC values (expressed in mg CaO per g of the zeolite composition) are determined in accordance with the method described in GB 1 473 201 .
  • the suspension is stirred vigorously for 15 minutes at 22C (+/-2C) after which a 250ml sample of the suspension is filtered using a Buchner funnel.
  • the residual calcium content of the solution (x mg per litre of CaO) is determined and the calcium binding capacity of the zeolite calculated as 300-x mg of CaO.
  • Particle sizes and particle size distributions as referred to herein are by weight and are determined using a Malvern Mastersizer 2000 equipped with the sample dispersion unit Hydro 2000S (supplied by Malvern Instruments Ltd., UK). Measurement of particle size was carried out with the zeolite dispersed in demineralized water, with 150 seconds of sonication (tip displacement 40%) before measurement and a stirrer speed of 2450 rpm in the sample dispersion unit. Particle size distributions were calculated using Mie theory assuming a sample Rl of 1.5295 and an absorption coefficient of 0.1 .
  • the invention provides particulate zeolite compositions having an absorbency which renders them eminently suitable for the production of particulate or granular detergent or detergent additive formulations which comprise at least one surfactant absorbed on or in the zeolite particles.
  • the invention has been based on the surprising finding that it is possible to produce zeolite particles which comprise co- crystallised zeolite A and zeolite HS and which have a much higher liquid absorption capacity than the product disclosed in EP 0 739 977.
  • Zeolite compositions in accordance with the first aspect of the invention have a calcium binding capacity of 20- 120 mg CaO/g anhydrous zeolite and typically have an oil absorption value of at least 60 g oil per 100 g of the zeolite composition. This compares with the value of 45.5 ml/100 g (equivalent to 42.77 g/100 g - taking the specific gravity of linseed oil to be 0.94) quoted for the zeolite A/HS investigated in EP 0 739 977.
  • Preferred embodiments of zeolite composition in accordance with the first aspect of the invention have a calcium binding capacity of 40-120 mg CaO/g anhydrous zeolite, even more preferably 40-100 mg CaO/g anhydrous zeolite.
  • Alternatively or additionally preferred embodiments of zeolite composition in accordance with the first aspect of the invention have an oil absorption value of at least 65 g oil per 100 g of the zeolite composition, with some embodiments of zeolite composition in accordance with the first aspect of the invention having an oil absorption of at least 70 g oil per 100 g of the zeolite composition.
  • Embodiments of zeolite composition in accordance with the first aspect of the invention can have oil absorption values up to 80 g or even 85 g oil per 100 g of the zeolite composition. More generally, zeolite compositions in accordance with the first aspect of the invention have an oil absorption value of 60 g to 85 g oil per 100 g of the zeolite composition. Embodiments of the zeolite compositions may have an oil absorption value of 60 g to 80 g (e.g. 60 g to 75 g) oil per 100 g of the zeolite composition.
  • zeolite compositions in accordance with the second aspect of the invention have an oil absorption value of at least 65 g oil per 100 g of the zeolite composition, with some embodiments of zeolite composition in accordance with the second aspect of the invention having an oil absorption of at least 70 g oil per 100 g of the zeolite composition.
  • Embodiments of zeolite composition in accordance with the second aspect of the invention can have oil absorption values up to 80 g or even 85 g oil per 100 g of the zeolite composition. More generally, zeolite compositions in accordance with the second aspects of the invention have an oil absorption value of 60 g to 85 g oil per 100 g of the zeolite composition.
  • Embodiments of the zeolite compositions may have an oil absorption value of 60 g to 80 g (e.g. 60 g to 75 g) oil per 100 g of the zeolite composition. Zeolite compositions in accordance with the second aspect of the invention therefore similarly have higher oil absorption values than for the zeolite A/HS investigated in EP 0 739 977.
  • Zeolite compositions in accordance with the first and second aspects of the invention preferably have a particle size distribution such that at least 90% by weight of the particles have a size less than 20 ⁇ . More preferably, at least 90% by weight of the particles have a size less than 15 ⁇ , e.g. less than 10 ⁇ .
  • the zeolite particles will preferably have a mean particle size in the range 1 to 10 ⁇ , more preferably 2 to 8 ⁇ .
  • the preferred zeolite compositions may be produced by reaction of aqueous solutions of sodium aluminate and sodium silicate prepared in concentrations, and mixed together in such proportions, that the overall mixed solution has the following molar ratios.
  • the zeolite composition can be prepared by intensive mixing of the sodium aluminate and sodium silicate solutions at a temperature above 70°C. The resulting mixed solution forms a gel which is maintained above 70°C (e.g. at 95°-100°C) with mixing. The reaction proceeds with crystallisation and the conditions are maintained to form particles of co-crystallised zeolite A and zeolite HS having the parameters defined for the first and/or second aspects of the invention.
  • the product of crystallisation will generally be a slurry which may then be cooled using a flash evaporator, filtered and washed with de-ionised water.
  • Zeolite compositions comprising particles of co-crystallised zeolite and zeolite HS, preferably in their sodium forms, with the composition being such as to have a calcium binding capacity of 20-120mg CaO/g of anhydrous zeolite and/or an oil absorption value of at least 60 g oil per 100 g of the zeolite composition are eminently suitable for the production of particulate or granular detergent or detergent additive formulations by absorption of liquid or pasty compositions comprising at least one surfactant and optionally other components of a detergent formulation.
  • Particularly suitable such compositions are those having a particle size distribution such that at least 90% by weight of the particles have a size less than 15 ⁇ and/or a mean particle size in the range 1 to 10 ⁇ .
  • the zeolite composition has a high absorption capacity for liquid or pasty compositions comprising a surfactant.
  • the surfactant may, for example, be an anionic, cationic, zwitterionic or amphoteric surfactant.
  • the zeolite compositions are most especially useful in the case where the surfactant is a non-ionic surfactant since high loadings of such surfactants may be achieved using the zeolite composition.
  • Such non-ionic surfactants to be absorbed by the zeolite composition preferably comprise at least one ethoxylated long chain alcohol, most preferably such a surfactant in which the residue of the alcohol has 12 to 20, even more preferably 12 to 15, carbon atoms.
  • embodiments of zeolite composition in accordance with the invention are capable of absorbing of at least 70 g of Synperonic® A3 per 100 g of the zeolite composition using the test described herein (Synperonic® A3 is a non- ionic surfactant supplied by Croda International comprising the residue of an alcohol having 12 to 15 carbon atoms, the surfactant incorporating an average of three oxyethylene units per alcohol residue).
  • the particulate or granular detergent or detergent additive formulation may be produced by admixing the zeolite composition with the liquid or pasty composition comprising the surfactant using techniques that are well established in the art, e.g. a high speed mixer.
  • the liquid or pasty composition may incorporate surfactant(s), with the resulting product being a detergent additive formulation which may be compounded with other ingredients for a detergent formulation to produce a final product.
  • the liquid or pasty surfactant composition incorporating the surfactant(s) may additionally incorporate other components of a detergent formulation such as to produce a final detergent formulation per se.
  • the invention allows the production of free-flowing particulate or granular detergent or detergent additive formulations.
  • These formulations may comprise agglomerates of the zeolite particles bound together by the surfactant.
  • a zeolite composition in accordance with the invention was synthesised using a sol-gel process from sodium aluminate and sodium silicate solutions which were prepared and reacted in accordance with the following procedure.
  • a 30 m 3 steel reactor was charged with 16,105 kg of aqueous sodium aluminate mother liquor (0.40% Al 2 0 3 , 8.50% Na 2 0) and 1 ,778 kg of 50% aqueous sodium hydroxide solution (38.75% Na 2 0).
  • the resultant mixture was then heated to 101 °C by passage through a plate heat exchanger.
  • 2,179 kg of alumina trihydrate ATH, (62%AI 2 0 3 ) was then added to the heated solution which was maintained at 101 °C with mixing for about 30 minutes to ensure most of the ATH was digested to produce the sodium aluminate solution for use in the synthesis.
  • an aqueous solution of sodium silicate (the solution containing 25.50% Si0 2 and 16.80% Na 2 0) having a total weight 6,443 kg and a temperature of 85°C was prepared.
  • the sodium aluminate and sodium hydroxide solutions had the following molar ratios - 3.65 Na 2 0. Al 2 0 3 . 1 .97 Si0 2 . 81 H 2 0.
  • a synthesis gel was then prepared by injecting 950 kg/minute of the sodium aluminate solution and 318 kg/minute of the sodium silicate solution (both as prepared above) into a jet mixer and then into an insulated crystalliser vessel equipped with baffles and mixing impellers driven by a 15 kW (20 horsepower) motor.
  • the temperature of the sodium silicate solution was controlled at 80°C.
  • the gel mixture was then heated to 98-100°C by injection of steam and held at that temperature in the insulated vessel for about 90 minutes.
  • the product (a slurry) from the crystalliser was cooled to 60-65°C using a flash evaporator.
  • the cooled slurry was filtered by means of a filter press, washed with soft water and then dried through a ring mill dryer at 98°C.
  • the product had a calcium binding capacity of 64 mg CaO per g anhydrous zeolite.
  • Example 1 i.e. a composition in accordance with the invention, had a significantly improved absorption capacity for both linseed oil and Synperonic® A3 as compared to Wessalith P.
  • the linseed oil absorption value of the product of Example 1 was superior to the zeolite A/HS evaluated for the purposes of EP 0 739 977, that zeolite having an oil absorption capacity of 45.5 ml/100 g (i.e. 42.77 g/100 g).
  • the zeolite composition of Example 1 was eminently suitable for the use in production of free-flowing detergent and detergent additive formulations.
  • This Example describes production of a zeolite composition in accordance with the invention using seed crystals in conjunction with a sol-gel process.
  • Seed crystals were prepared in accordance with the following procedure, which is a modification of that described in Example 1.
  • a 30 m 3 steel reactor was charged with 17,231 kg of aqueous sodium aluminate mother liquor (0.40% Al 2 0 3 , 8.50% Na 2 0) and 6,210 kg of 50% aqueous sodium hydroxide solution (38.75% Na 2 0).
  • the resultant mixture was then heated to 101 °C by passage through a plate heat exchanger.
  • 2,369 kg of alumina trihydrate (ATH, 62%AI 2 0 3 ) was then added to the heated solution which was maintained at 101 °C with mixing for about 30 minutes to ensure that most of the ATH was digested to produce a sodium aluminate solution.
  • an aqueous solution of sodium silicate (the solution containing 25.50% Si0 2 and 16.80% Na 2 0) having a total weight 6,443 kg and a temperature of 85°C was prepared.
  • the sodium aluminate and sodium hydroxide solutions had the following molar ratios - 5.4 Na 2 0. Al 2 0 3 . 1 .97 Si0 2. 90 H 2 0.
  • a synthesis gel was then prepared by injecting 1050 kg/minute of the sodium aluminate solution and 318 kg/minute of the sodium silicate solution (both as prepared in this part of the Example) into a jet mixer and then into an insulated crystalliser vessel equipped with baffles and mixing impellers driven by a 15 kW (20 horsepower) motor.
  • the gel mixture was then heated to 98-100°C by injection of steam and held at that temperature in the insulated vessel for about 120 minutes.
  • the product (a slurry) from the crystalliser was cooled to 60-65°C using a flash evaporator.
  • the cooled slurry was filtered by means of a filter press, washed with soft water and then dried through a ring mill dryer at 98°C.
  • the product was a crystalline solid comprised of particles of co-crystallised zeolite A and zeolite HS with a median particle size of 9.44 ⁇ .
  • the product was used to provide seed crystals for the synthesis of the final zeolite composition.
  • Synthesis of Zeolite Composition A 30 m 3 steel reactor was charged with 19,605 kg of aqueous sodium aluminate mother liquor (0.40% Al 2 0 3 , 8.50% Na 2 0) and 5,349 kg of 50% aqueous sodium hydroxide solution (38.75% Na 2 0). The resultant mixture was then heated to 101 °C by passage through a plate heat exchanger. 2,562 kg of alumina trihydrate (ATH, 62%AI 2 0 3 ) was then added to the heated solution which was maintained at 101 °C with mixing for about 30 minutes to ensure that most of the ATH was digested to produce a sodium aluminate solution.
  • ATH alumina trihydrate
  • an aqueous solution of sodium silicate (the solution containing 25.50% Si0 2 and 16.80% Na 2 0) having a total weight 7,586 kg and a temperature of 85°C was prepared.
  • the sodium aluminate and sodium hydroxide solutions had the following molar ratios - 4.95 Na 2 0. Al 2 0 3 . 1 .97 Si0 2 . 90 H 2 0.
  • a batch of seed crystals (synthesised as described in the first part of this Example) was prepared by mixing 200 kg of the seed crystals with 1 ,250 kg soft water for 30 minutes in a 3.7 m 3 tank.
  • a synthesis gel was then prepared by injecting 1 ,050 kg/minute of the sodium aluminate solution and 318 kg/minute of the sodium silicate solution (both as prepared in this part of the Example) into a jet mixer and then into an insulated crystalliser vessel equipped with baffles and mixing impellers driven by a 15 kW (20 horsepower) motor. Simultaneously, the batch of seed crystals was added directly to the crystalliser vessel over the same time period for addition of the mixture of sodium aluminate and sodium silicate solutions.
  • the gel mixture was then heated to 98-100°C by injection of steam and held at that temperature in the insulated vessel for about 120 minutes.
  • the product (a slurry) from the crystalliser was cooled to 60-65°C.
  • the cooled slurry was filtered by means of a filter press, washed with soft water and then dried through a ring mill dryer at 98°C.
  • the resulting product was a crystalline solid comprised of particles of co-crystallised sodium forms of zeolite A and zeolite HS, for which the particle size distribution was represented by the following values:
  • the product had a calcium binding capacity of 31 mg CaO per g zeolite.
  • the ability of the product to absorb (i) linseed oil in accordance with ISO 787/5-1980 and (ii) Synperonic® A3 in accordance with the method outlined above was measured. The results are shown in Table 2 below, which also includes the corresponding values for the product of Example 1 and Wessalith P (zeolite A).
  • Example 2 had a slightly higher oil absorption value than that of Example 1 but a slightly inferior ability to absorb Synperonic® A3. Nevertheless, the product of Example 2 had a superior oil absorption value to that of Wessalith P (zeolite A) and also the product tested for the purpose of EP 0 739 977.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne une composition de zéolite cristalline, particulaire, qui comprend des particules de zéolite A et de zéolite HS co-cristallisées, ladite composition ayant une capacité de fixation du calcium de 20 à 120 mg de CaO/g de zéolite anhydre et/ou une absorption d'huile d'au moins 60 g d'huile pour 100 g de composition de zéolite. Les zéolite A et zéolite HS sont, de préférence, toutes deux sous forme sodique. L'invention concerne également une formulation de détergent ou d'additif de détergent particulaire ou en granulés qui comprend des particules de la composition de zéolite et au moins un tensioactif absorbé par les particules.
PCT/GB2015/051070 2014-04-08 2015-04-08 Composition de zéolite particulaire WO2015155525A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201580018108.6A CN106232522A (zh) 2014-04-08 2015-04-08 微粒沸石组合物
TR2016/14069T TR201614069T1 (tr) 2014-04-08 2015-04-08 Parçacikli zeoli̇t kompozi̇syonu
ZA2016/06564A ZA201606564B (en) 2014-04-08 2016-09-22 Particulate zeolite composition

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GB1406268.1 2014-04-08
GBGB1406268.1A GB201406268D0 (en) 2014-04-08 2014-04-08 Particulate zeolite composition

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ZA (1) ZA201606564B (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0739977A1 (fr) * 1995-04-27 1996-10-30 The Procter & Gamble Company Procédé pour la production des composés detergents granulaires ou des compositions détergentes granulaires

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